Hibiki Amemiya is a corporate volleyball player. She often has to work overtime because of unfamiliar computer work... and then it suddenly starts raining heavily! Amemiya is left behind at the office with a senior colleague, so he reluctantly lets the senior colleague stay at his house. "Senior, are you keeping your senses?...?" He knows it's wrong, but his colleague's defenseless, soft breasts drive him crazy. "You can't do that? Your wife will get angry at you... Ah, it feels so good..." The man can't resist the wet, sharp-angled curves of the new office lady who is weak to pressure, so he licks her all over and impregnates her, leaving his wife behind!